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Finding the Fourth Proportional to 367,072.80, 550,809.81 and 142,442.07

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Solution

The fourth proportional to 367,072.80, 550,809.81 and 142,442.07 is: 213,740.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,072.80 : 550,809.81 = 142,442.07 : x
  2. Step 2: Convert to fraction form
    367,072.80/550,809.81 = 142,442.07/x
  3. Step 3: Cross multiply
    367,072.80x = 550,809.81 × 142,442.07
  4. Step 4: Simplify right side
    367,072.80x = 78,458,489,512.71
  5. Step 5: Solve for x
    x = 78,458,489,512.71/367,072.80
  6. Step 6: Final answer
    x = 213,740.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.